{
  "completed_step": "C403",
  "next_proposed_step": "C404",
  "question": "Compare the C400 three-vertex Noah return-loop grammar with the already sourced C385–C388 Noah-to-Shem E/J strips. Test whether the existing vertical E comparisons carry the admitted return paths and circuit normal forms to a source-qualified Shem graph, using only existing endpoints, pivots, chronology contexts and phases. Record any missing pivot or order obstruction. Do not extend Gear scope, add generated source points, or execute a general search.",
  "reason_selected_after_current_result": "The present batch closes the source census and establishes a precise local path structure, while the preceding batch supplies a distinct source-qualified Noah-to-Shem comparison. Their finite compatibility is the next direct test connecting the two results. C404 is proposed only and requires a new instruction.",
  "executed": false,
  "authorization_remaining": 0,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}